BIOLOGICAL EFFICACY AND INFLUENCE OF SOME FOLIAR HERBICIDES ON THE YIELD OF POTATOES | БИОЛОГИЧНА ЕФИКАСНОСТ И ВЛИЯНИЕ НА НЯКОИ ЛИСТНИ ХЕРБИЦИДНИ ПРЕПАРАТИ ВЪРХУ ДОБИВА ОТ КАРТОФИ
2013
Kalinova, Shch., Agricultural University, Plovdiv (Bulgaria) | Khristoskov, A., Agricultural University, Plovdiv (Bulgaria)
The experiments were conducted in 2009-2011 in the experimental field of the Department of Agriculture and Herboligy of the Agricultural University - Plovdiv. The biological efficacy of three foliar systemic selective herbicides was studied as well as their influence on the yield of two varieties of medium-early potatoes. The studied herbicides were as follows: propakvizafop - Azhil 100 EC in a dose 200 ml/dka, kvizalofpo-P-etyl - Targa Super 5 EC in a dose 300 ml/dka and fluazifop-P-butyl Fuzilad forte in a dose 130 ml/dka. Azhil 100 EC in a dose 200 ml/dka /a.s.propakvizafop/ showed the highest biological efficiency destroying on the average 99.74% of Johnson grass from seeds and from rhizomes. The best effect on the yield of potatoes was manifested by propakvizafop, increasing the yield of the Sante cultivar by 132.0 kg/dka.
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